Chronic multifocal osteomyelitis, right ankle and foot

This code signifies a persistent, widespread infection of the bone and bone marrow affecting multiple sites within the right ankle and foot. It indicates a long-standing inflammatory process, often characterized by periods of exacerbation and remission, rather than an acute infection.

Apply this code when documentation clearly states chronic osteomyelitis involving more than one bone or area within the right ankle and foot. Supporting documentation should detail the chronic nature of the infection, such as prolonged symptoms, recurrent episodes, or evidence of long-term bone changes on imaging.

• Ensure the documentation specifies "chronic" and "multifocal" within the right ankle and foot.
• Distinguish from acute osteomyelitis (M86.1-) and other specified osteomyelitis (M86.8-).
• Always review imaging reports and pathology findings for definitive confirmation of chronic multifocal osteomyelitis.